a step towards API-independent JSON parsing of accounts

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / json / AccountListParser.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/json/AccountListParser.java b/app/src/main/java/net/ktnx/mobileledger/json/AccountListParser.java
new file mode 100644 (file)
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+++ b/app/src/main/java/net/ktnx/mobileledger/json/AccountListParser.java
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+/*
+ * Copyright © 2020 Damyan Ivanov.
+ * This file is part of MoLe.
+ * MoLe is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * MoLe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger.json;
+
+import com.fasterxml.jackson.databind.MappingIterator;
+
+import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
+import net.ktnx.mobileledger.model.LedgerAccount;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+import static net.ktnx.mobileledger.utils.Logger.debug;
+
+abstract public class AccountListParser {
+    protected MappingIterator<net.ktnx.mobileledger.json.ParsedLedgerAccount> iterator;
+
+    public ParsedLedgerAccount nextAccount() {
+        if (!iterator.hasNext())
+            return null;
+
+        ParsedLedgerAccount next = iterator.next();
+
+        if (next.getAname()
+                .equalsIgnoreCase("root"))
+            return nextAccount();
+
+        debug("accounts", String.format("Got account '%s' [v1.15]", next.getAname()));
+        return next;
+    }
+    public LedgerAccount nextLedgerAccount(RetrieveTransactionsTask task,
+                                           HashMap<String, LedgerAccount> map) {
+        ParsedLedgerAccount parsedAccount = nextAccount();
+        if (parsedAccount == null)
+            return null;
+
+        task.addNumberOfPostings(parsedAccount.getAnumpostings());
+        final String accName = parsedAccount.getAname();
+        LedgerAccount acc = map.get(accName);
+        if (acc != null)
+            throw new RuntimeException(
+                    String.format("Account '%s' already present", acc.getName()));
+        String parentName = LedgerAccount.extractParentName(accName);
+        ArrayList<LedgerAccount> createdParents = new ArrayList<>();
+        LedgerAccount parent;
+        if (parentName == null) {
+            parent = null;
+        }
+        else {
+            parent = task.ensureAccountExists(parentName, map, createdParents);
+            parent.setHasSubAccounts(true);
+        }
+        acc = new LedgerAccount(task.getProfile(), accName, parent);
+        map.put(accName, acc);
+
+        String lastCurrency = null;
+        float lastCurrencyAmount = 0;
+        for (ParsedBalance b : parsedAccount.getAibalance()) {
+            task.throwIfCancelled();
+            final String currency = b.getAcommodity();
+            final float amount = b.getAquantity()
+                                  .asFloat();
+            if (currency.equals(lastCurrency)) {
+                lastCurrencyAmount += amount;
+            }
+            else {
+                if (lastCurrency != null) {
+                    acc.addAmount(lastCurrencyAmount, lastCurrency);
+                }
+                lastCurrency = currency;
+                lastCurrencyAmount = amount;
+            }
+        }
+        if (lastCurrency != null) {
+            acc.addAmount(lastCurrencyAmount, lastCurrency);
+        }
+        for (LedgerAccount p : createdParents)
+            acc.propagateAmountsTo(p);
+
+        return acc;
+    }
+
+}